NM705 MODULE 3A BREAST ANATOMY & PHYSIOLOGY PPT
EXAM QUESTIONS AND ANSWERS WITH COMPLETE
SOLUTIONS VERIFIED
Mammogenesis
Breast growth and development
Estrogen and Progesterone contribute to _________________
duct and glandular development
Breast development is only complete in _______________.
pregnancy
Mammogenesis in pregnancy
Breasts increase in size and areola increases in size and darkens with pigmentation
Alveoli
Basic Unit of Glandular Tissue
Alveolus
Milk-secreting Unit
Myoepithelial cells
Surround alveolus and contract to eject milk
Lobe
Collection of one primary duct and its ductules/aveoli. 15-20 per breast.
Nipple
10-15 ducts congregate
, Changes in Pregnancy: Nipples
-Become more erect
-Growth due to serum prolactin
Changes in Pregnancy: Areola
-Diameter increases by about 40%
-caused by Placental Lactogen
Changes in Pregnancy: Montgomery glands
enlarge
Changes in Pregnancy: Lobes/Lobules/Alveoli
Increase in size due to Progesterone
Changes in Pregnancy: Ductules
-proliferate and differentiate
-influenced by Estrogen
Lactogenesis Stage I: What Happens?
-Prolactin stimulates mammary secretory epithelial cells to produce milk
-Alveoli become distended and milk droplets move to ductules
Lactogenesis Stage I: When?
Occurs after 16 weeks
Lactogenesis Stage II: What Happens?
-Results from delivery of the placenta
-Copious amounts of milk
EXAM QUESTIONS AND ANSWERS WITH COMPLETE
SOLUTIONS VERIFIED
Mammogenesis
Breast growth and development
Estrogen and Progesterone contribute to _________________
duct and glandular development
Breast development is only complete in _______________.
pregnancy
Mammogenesis in pregnancy
Breasts increase in size and areola increases in size and darkens with pigmentation
Alveoli
Basic Unit of Glandular Tissue
Alveolus
Milk-secreting Unit
Myoepithelial cells
Surround alveolus and contract to eject milk
Lobe
Collection of one primary duct and its ductules/aveoli. 15-20 per breast.
Nipple
10-15 ducts congregate
, Changes in Pregnancy: Nipples
-Become more erect
-Growth due to serum prolactin
Changes in Pregnancy: Areola
-Diameter increases by about 40%
-caused by Placental Lactogen
Changes in Pregnancy: Montgomery glands
enlarge
Changes in Pregnancy: Lobes/Lobules/Alveoli
Increase in size due to Progesterone
Changes in Pregnancy: Ductules
-proliferate and differentiate
-influenced by Estrogen
Lactogenesis Stage I: What Happens?
-Prolactin stimulates mammary secretory epithelial cells to produce milk
-Alveoli become distended and milk droplets move to ductules
Lactogenesis Stage I: When?
Occurs after 16 weeks
Lactogenesis Stage II: What Happens?
-Results from delivery of the placenta
-Copious amounts of milk
